#define _FORTIFY_SOURCE 2
#define TMPFILE_SIZE (1024 * 32)
#include <sys/param.h>
#include <sys/jail.h>
#include <sys/random.h>
#include <sys/resource.h>
#include <sys/select.h>
#include <sys/socket.h>
#include <sys/time.h>
#include <sys/uio.h>
#include <sys/wait.h>
#include <dirent.h>
#include <errno.h>
#include <fcntl.h>
#include <limits.h>
#include <poll.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <strings.h>
#include <sysexits.h>
#include <unistd.h>
#include <wchar.h>
#include <atf-c.h>
static FILE * __unused
new_fp(size_t __len)
{
static char fpbuf[LINE_MAX];
FILE *fp;
ATF_REQUIRE(__len <= sizeof(fpbuf));
memset(fpbuf, 'A', sizeof(fpbuf) - 1);
fpbuf[sizeof(fpbuf) - 1] = '\0';
fp = fmemopen(fpbuf, sizeof(fpbuf), "rb");
ATF_REQUIRE(fp != NULL);
return (fp);
}
static const char * __unused
new_symlink(size_t __len)
{
static const char linkname[] = "link";
char target[MAXNAMLEN];
int error;
ATF_REQUIRE(__len <= sizeof(target));
arc4random_buf(target, sizeof(target));
error = unlink(linkname);
ATF_REQUIRE(error == 0 || errno == ENOENT);
error = symlink(target, linkname);
ATF_REQUIRE(error == 0);
return (linkname);
}
static void __unused
new_socket(int sock[2])
{
unsigned char ctrl[CMSG_SPACE(sizeof(int))] = { 0 };
static char sockbuf[256];
ssize_t rv;
size_t total = 0;
struct msghdr hdr = { 0 };
struct cmsghdr *cmsg;
int error, fd;
error = socketpair(AF_UNIX, SOCK_STREAM, 0, sock);
ATF_REQUIRE(error == 0);
while (total != sizeof(sockbuf)) {
rv = send(sock[1], &sockbuf[total], sizeof(sockbuf) - total, 0);
ATF_REQUIRE_MSG(rv > 0,
"expected bytes sent, got %zd with %zu left (size %zu, total %zu)",
rv, sizeof(sockbuf) - total, sizeof(sockbuf), total);
ATF_REQUIRE_MSG(total + (size_t)rv <= sizeof(sockbuf),
"%zd exceeds total %zu", rv, sizeof(sockbuf));
total += rv;
}
hdr.msg_control = ctrl;
hdr.msg_controllen = sizeof(ctrl);
cmsg = CMSG_FIRSTHDR(&hdr);
cmsg->cmsg_level = SOL_SOCKET;
cmsg->cmsg_type = SCM_RIGHTS;
cmsg->cmsg_len = CMSG_LEN(sizeof(fd));
fd = STDIN_FILENO;
memcpy(CMSG_DATA(cmsg), &fd, sizeof(fd));
error = sendmsg(sock[1], &hdr, 0);
ATF_REQUIRE(error != -1);
}
static int __unused
new_tmpfile(void)
{
char buf[1024];
ssize_t rv;
size_t written;
int fd;
fd = open("tmpfile", O_RDWR | O_CREAT | O_TRUNC, 0644);
ATF_REQUIRE(fd >= 0);
written = 0;
while (written < TMPFILE_SIZE) {
rv = write(fd, buf, sizeof(buf));
ATF_REQUIRE(rv > 0);
written += rv;
}
ATF_REQUIRE_EQ(0, lseek(fd, 0, SEEK_SET));
return (fd);
}
static void
disable_coredumps(void)
{
struct rlimit rl = { 0 };
if (setrlimit(RLIMIT_CORE, &rl) == -1)
_exit(EX_OSERR);
}
static void __unused
replace_stdin(void)
{
int fd;
fd = new_tmpfile();
(void)dup2(fd, STDIN_FILENO);
if (fd != STDIN_FILENO)
close(fd);
}
ATF_TC(bcopy_before_end);
ATF_TC_HEAD(bcopy_before_end, tc)
{
}
ATF_TC_BODY(bcopy_before_end, tc)
{
#define BUF &__stack.__buf
struct {
uint8_t padding_l;
unsigned char __buf[42];
uint8_t padding_r;
} __stack;
const size_t __bufsz __unused = sizeof(__stack.__buf);
const size_t __len = 42 - 1;
const size_t __idx __unused = __len - 1;
char src[__len + 10];
bcopy(src, __stack.__buf, __len);
#undef BUF
}
ATF_TC(bcopy_end);
ATF_TC_HEAD(bcopy_end, tc)
{
}
ATF_TC_BODY(bcopy_end, tc)
{
#define BUF &__stack.__buf
struct {
uint8_t padding_l;
unsigned char __buf[42];
uint8_t padding_r;
} __stack;
const size_t __bufsz __unused = sizeof(__stack.__buf);
const size_t __len = 42;
const size_t __idx __unused = __len - 1;
char src[__len + 10];
bcopy(src, __stack.__buf, __len);
#undef BUF
}
ATF_TC(bcopy_heap_before_end);
ATF_TC_HEAD(bcopy_heap_before_end, tc)
{
}
ATF_TC_BODY(bcopy_heap_before_end, tc)
{
#define BUF __stack.__buf
struct {
uint8_t padding_l;
unsigned char * __buf;
uint8_t padding_r;
} __stack;
const size_t __bufsz __unused = sizeof(*__stack.__buf) * (42);
const size_t __len = 42 - 1;
const size_t __idx __unused = __len - 1;
char src[__len + 10];
__stack.__buf = malloc(__bufsz);
bcopy(src, __stack.__buf, __len);
#undef BUF
}
ATF_TC(bcopy_heap_end);
ATF_TC_HEAD(bcopy_heap_end, tc)
{
}
ATF_TC_BODY(bcopy_heap_end, tc)
{
#define BUF __stack.__buf
struct {
uint8_t padding_l;
unsigned char * __buf;
uint8_t padding_r;
} __stack;
const size_t __bufsz __unused = sizeof(*__stack.__buf) * (42);
const size_t __len = 42;
const size_t __idx __unused = __len - 1;
char src[__len + 10];
__stack.__buf = malloc(__bufsz);
bcopy(src, __stack.__buf, __len);
#undef BUF
}
ATF_TC(bcopy_heap_after_end);
ATF_TC_HEAD(bcopy_heap_after_end, tc)
{
}
ATF_TC_BODY(bcopy_heap_after_end, tc)
{
#define BUF __stack.__buf
struct {
uint8_t padding_l;
unsigned char * __buf;
uint8_t padding_r;
} __stack;
const size_t __bufsz __unused = sizeof(*__stack.__buf) * (42);
const size_t __len = 42 + 1;
const size_t __idx __unused = __len - 1;
pid_t __child;
int __status;
char src[__len + 10];
__child = fork();
ATF_REQUIRE(__child >= 0);
if (__child > 0)
goto monitor;
disable_coredumps();
__stack.__buf = malloc(__bufsz);
bcopy(src, __stack.__buf, __len);
_exit(EX_SOFTWARE);
monitor:
while (waitpid(__child, &__status, 0) != __child) {
ATF_REQUIRE_EQ(EINTR, errno);
}
if (!WIFSIGNALED(__status)) {
switch (WEXITSTATUS(__status)) {
case EX_SOFTWARE:
atf_tc_fail("FORTIFY_SOURCE failed to abort");
break;
case EX_OSERR:
atf_tc_fail("setrlimit(2) failed");
break;
default:
atf_tc_fail("child exited with status %d",
WEXITSTATUS(__status));
}
} else {
ATF_REQUIRE_EQ(SIGABRT, WTERMSIG(__status));
}
#undef BUF
}
ATF_TC(bzero_before_end);
ATF_TC_HEAD(bzero_before_end, tc)
{
}
ATF_TC_BODY(bzero_before_end, tc)
{
#define BUF &__stack.__buf
struct {
uint8_t padding_l;
unsigned char __buf[42];
uint8_t padding_r;
} __stack;
const size_t __bufsz __unused = sizeof(__stack.__buf);
const size_t __len = 42 - 1;
const size_t __idx __unused = __len - 1;
bzero(__stack.__buf, __len);
#undef BUF
}
ATF_TC(bzero_end);
ATF_TC_HEAD(bzero_end, tc)
{
}
ATF_TC_BODY(bzero_end, tc)
{
#define BUF &__stack.__buf
struct {
uint8_t padding_l;
unsigned char __buf[42];
uint8_t padding_r;
} __stack;
const size_t __bufsz __unused = sizeof(__stack.__buf);
const size_t __len = 42;
const size_t __idx __unused = __len - 1;
bzero(__stack.__buf, __len);
#undef BUF
}
ATF_TC(bzero_heap_before_end);
ATF_TC_HEAD(bzero_heap_before_end, tc)
{
}
ATF_TC_BODY(bzero_heap_before_end, tc)
{
#define BUF __stack.__buf
struct {
uint8_t padding_l;
unsigned char * __buf;
uint8_t padding_r;
} __stack;
const size_t __bufsz __unused = sizeof(*__stack.__buf) * (42);
const size_t __len = 42 - 1;
const size_t __idx __unused = __len - 1;
__stack.__buf = malloc(__bufsz);
bzero(__stack.__buf, __len);
#undef BUF
}
ATF_TC(bzero_heap_end);
ATF_TC_HEAD(bzero_heap_end, tc)
{
}
ATF_TC_BODY(bzero_heap_end, tc)
{
#define BUF __stack.__buf
struct {
uint8_t padding_l;
unsigned char * __buf;
uint8_t padding_r;
} __stack;
const size_t __bufsz __unused = sizeof(*__stack.__buf) * (42);
const size_t __len = 42;
const size_t __idx __unused = __len - 1;
__stack.__buf = malloc(__bufsz);
bzero(__stack.__buf, __len);
#undef BUF
}
ATF_TC(bzero_heap_after_end);
ATF_TC_HEAD(bzero_heap_after_end, tc)
{
}
ATF_TC_BODY(bzero_heap_after_end, tc)
{
#define BUF __stack.__buf
struct {
uint8_t padding_l;
unsigned char * __buf;
uint8_t padding_r;
} __stack;
const size_t __bufsz __unused = sizeof(*__stack.__buf) * (42);
const size_t __len = 42 + 1;
const size_t __idx __unused = __len - 1;
pid_t __child;
int __status;
__child = fork();
ATF_REQUIRE(__child >= 0);
if (__child > 0)
goto monitor;
disable_coredumps();
__stack.__buf = malloc(__bufsz);
bzero(__stack.__buf, __len);
_exit(EX_SOFTWARE);
monitor:
while (waitpid(__child, &__status, 0) != __child) {
ATF_REQUIRE_EQ(EINTR, errno);
}
if (!WIFSIGNALED(__status)) {
switch (WEXITSTATUS(__status)) {
case EX_SOFTWARE:
atf_tc_fail("FORTIFY_SOURCE failed to abort");
break;
case EX_OSERR:
atf_tc_fail("setrlimit(2) failed");
break;
default:
atf_tc_fail("child exited with status %d",
WEXITSTATUS(__status));
}
} else {
ATF_REQUIRE_EQ(SIGABRT, WTERMSIG(__status));
}
#undef BUF
}
ATF_TC(explicit_bzero_before_end);
ATF_TC_HEAD(explicit_bzero_before_end, tc)
{
}
ATF_TC_BODY(explicit_bzero_before_end, tc)
{
#define BUF &__stack.__buf
struct {
uint8_t padding_l;
unsigned char __buf[42];
uint8_t padding_r;
} __stack;
const size_t __bufsz __unused = sizeof(__stack.__buf);
const size_t __len = 42 - 1;
const size_t __idx __unused = __len - 1;
explicit_bzero(__stack.__buf, __len);
#undef BUF
}
ATF_TC(explicit_bzero_end);
ATF_TC_HEAD(explicit_bzero_end, tc)
{
}
ATF_TC_BODY(explicit_bzero_end, tc)
{
#define BUF &__stack.__buf
struct {
uint8_t padding_l;
unsigned char __buf[42];
uint8_t padding_r;
} __stack;
const size_t __bufsz __unused = sizeof(__stack.__buf);
const size_t __len = 42;
const size_t __idx __unused = __len - 1;
explicit_bzero(__stack.__buf, __len);
#undef BUF
}
ATF_TC(explicit_bzero_heap_before_end);
ATF_TC_HEAD(explicit_bzero_heap_before_end, tc)
{
}
ATF_TC_BODY(explicit_bzero_heap_before_end, tc)
{
#define BUF __stack.__buf
struct {
uint8_t padding_l;
unsigned char * __buf;
uint8_t padding_r;
} __stack;
const size_t __bufsz __unused = sizeof(*__stack.__buf) * (42);
const size_t __len = 42 - 1;
const size_t __idx __unused = __len - 1;
__stack.__buf = malloc(__bufsz);
explicit_bzero(__stack.__buf, __len);
#undef BUF
}
ATF_TC(explicit_bzero_heap_end);
ATF_TC_HEAD(explicit_bzero_heap_end, tc)
{
}
ATF_TC_BODY(explicit_bzero_heap_end, tc)
{
#define BUF __stack.__buf
struct {
uint8_t padding_l;
unsigned char * __buf;
uint8_t padding_r;
} __stack;
const size_t __bufsz __unused = sizeof(*__stack.__buf) * (42);
const size_t __len = 42;
const size_t __idx __unused = __len - 1;
__stack.__buf = malloc(__bufsz);
explicit_bzero(__stack.__buf, __len);
#undef BUF
}
ATF_TC(explicit_bzero_heap_after_end);
ATF_TC_HEAD(explicit_bzero_heap_after_end, tc)
{
}
ATF_TC_BODY(explicit_bzero_heap_after_end, tc)
{
#define BUF __stack.__buf
struct {
uint8_t padding_l;
unsigned char * __buf;
uint8_t padding_r;
} __stack;
const size_t __bufsz __unused = sizeof(*__stack.__buf) * (42);
const size_t __len = 42 + 1;
const size_t __idx __unused = __len - 1;
pid_t __child;
int __status;
__child = fork();
ATF_REQUIRE(__child >= 0);
if (__child > 0)
goto monitor;
disable_coredumps();
__stack.__buf = malloc(__bufsz);
explicit_bzero(__stack.__buf, __len);
_exit(EX_SOFTWARE);
monitor:
while (waitpid(__child, &__status, 0) != __child) {
ATF_REQUIRE_EQ(EINTR, errno);
}
if (!WIFSIGNALED(__status)) {
switch (WEXITSTATUS(__status)) {
case EX_SOFTWARE:
atf_tc_fail("FORTIFY_SOURCE failed to abort");
break;
case EX_OSERR:
atf_tc_fail("setrlimit(2) failed");
break;
default:
atf_tc_fail("child exited with status %d",
WEXITSTATUS(__status));
}
} else {
ATF_REQUIRE_EQ(SIGABRT, WTERMSIG(__status));
}
#undef BUF
}
ATF_TP_ADD_TCS(tp)
{
ATF_TP_ADD_TC(tp, bcopy_before_end);
ATF_TP_ADD_TC(tp, bcopy_end);
ATF_TP_ADD_TC(tp, bcopy_heap_before_end);
ATF_TP_ADD_TC(tp, bcopy_heap_end);
ATF_TP_ADD_TC(tp, bcopy_heap_after_end);
ATF_TP_ADD_TC(tp, bzero_before_end);
ATF_TP_ADD_TC(tp, bzero_end);
ATF_TP_ADD_TC(tp, bzero_heap_before_end);
ATF_TP_ADD_TC(tp, bzero_heap_end);
ATF_TP_ADD_TC(tp, bzero_heap_after_end);
ATF_TP_ADD_TC(tp, explicit_bzero_before_end);
ATF_TP_ADD_TC(tp, explicit_bzero_end);
ATF_TP_ADD_TC(tp, explicit_bzero_heap_before_end);
ATF_TP_ADD_TC(tp, explicit_bzero_heap_end);
ATF_TP_ADD_TC(tp, explicit_bzero_heap_after_end);
return (atf_no_error());
}